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A Tour of the Cell

Dive into the fascinating world of cells, exploring common structures, differences in plant vs. animal cells, nucleic acid localization, and more. Discover the secrets of organelles, endomembrane system, Golgi apparatus, and the endosymbiont theory.

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A Tour of the Cell

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  1. Chapter 6 A Tour of the Cell Questions prepared by Jung Choi Georgia Institute of Technology

  2. Which cellular structure is common to all 3 domains of life? • Nucleus • Endoplasmic reticulum • Mitochondria • Phospholipid bilayer cell membrane • Endocytotic vesicles

  3. Difference between Plant and Animal CellsWhich of these organelles are absent in plant cells? • mitochondria • centrioles • microtubules • all of the above • none of the above

  4. Nucleic Acid LocalizationIf you treat cells with radioactive UTP, where in the cell would you expect the greatest concentration of radioactivity within the first few minutes? • nuclear matrix • cytoplasm • rough ER • nucleolus

  5. Enzymes responsible for biosynthesis of membrane lipids would be located in what part of the cell? • endoplasmic reticulum. • nucleus. • lysosomes. • Golgi. • plasma membrane

  6. Endomembrane SystemA membrane protein synthesized in the rough ER may be directed to • peroxisomes. • lysosomes. • mitochondria. • all of the above

  7. GolgiBrefeldin A is a drug that disrupts transport from the ER to the Golgi apparatus. What other organelles and membranes are affected? • lysosomes, vacuoles, plasma membrane • lysosomes, peroxisomes, plasma membrane • vacuoles, mitochondria, plasma membrane • lysosomes, vacuoles, nuclear membrane • all intracellular organelles and membranes

  8. According to the endosymbiont theory, which of the following organelles were once endosymbiotic prokaryotic organisms? • Mitochondria and lysosomes • Mitochondria and chloroplasts • Chloroplasts and Golgi apparatus • Golgi apparatus and ribosomes • Ribosomes and lysosomes

  9. Which of the following is not an argument for the theory that mitochondria and chloroplasts evolved from prokaryotic endosymbionts? • Mitochondria and chloroplasts have double membranes. • Mitochondria and chloroplasts have their own ribosomes. • Mitochondria and chloroplasts have their own DNA. • The mitochondrial and chloroplast genomes are circular. • All of the above support the endosymbiotic theory.

  10. Microtubule Function Taxol, a drug approved for treatment of breast cancer, prevents depolymerization of microtubules. What cellular function that affects cancer cells more than normal cells might taxol interfere with? • maintaining cell shape • cilia or flagella • chromosome movements in cell division • cell division (cleavage furrow formation) • cytoplasmic streaming

  11. ECM in Plant and Animal CellsThe difference in the structures of animal cell extracellular matrix and plant cell walls reflects what fundamental difference(s) in their adaptive strategies? • Animal cells must move more than plant cells. • Animal cells have to be more responsive to changes in their environment. • Animal cells have to communicate with each other more than plant cells. • all of the above

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